19.07.2013 Views

changes in protein profiles in bortezomib applied multiple myeloma ...

changes in protein profiles in bortezomib applied multiple myeloma ...

changes in protein profiles in bortezomib applied multiple myeloma ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

DNA as the first cell does. Therefore, if mutation is not repaired properly and before<br />

replication occurs, the mutated cells amplify to generate billions of cells that constitute a<br />

cancer (K<strong>in</strong>g and Rob<strong>in</strong>s, 2006; Lieberman and Marks, 2009).<br />

Figure 1.1. Loss of Normal Growth Control<br />

Carc<strong>in</strong>ogenesis, the process by which cancers are developed, is a multistage<br />

mechanism result<strong>in</strong>g from the accumulation of errors <strong>in</strong> vital regulatory pathways. It is<br />

<strong>in</strong>itiated <strong>in</strong> a s<strong>in</strong>gle cell, which then multiplies and obta<strong>in</strong>s additional alterations that<br />

give it a survival advantage over its neighbours (Figure 1.2) (K<strong>in</strong>g and Rob<strong>in</strong>s, 2006).<br />

Figure 1.2 represents development of cancer. Each connect<strong>in</strong>g arrow refers<br />

several events and many pathways can exist between each stage. First step (Initiation)<br />

expla<strong>in</strong>s the generation of mutated cells <strong>in</strong> consequence of mutations. Follow<strong>in</strong>g step<br />

(Promotion) expresses the proliferation of differentiated cells. Step three (Progression)<br />

states the formation of cancer. Subsequent to this uncontrolled growth, cancer cells that<br />

alter morphological properties, <strong>in</strong>vade other tissues and metastasize.<br />

3

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!